After one of the last FF updates, I noticed that I no longer needed to enter my Primary (Master) password to sync or access my logins or site passwords. After a bit of checking, I found that in FF/Tools/Options/Privacy & Security... My "Use Primary Password" box was unchecked! Was I hacked? I use full-time Malwarebytes (licensed) along with Win10 Security (which are suppose to play nice together; and ''have'' for years). I never received any indication of an issue from either app. Multiple (full) scans came back clean. Or was this an inadvertent change caused by one of the later FF updates? Btw, I use the same W10 and FF on several other machines, with virtually the same setup; none of which experienced this issue.